Presentation on theme: "B-3.2: Summarize the basic aerobic and anaerobic processes of cellular respiration and interpret the chemical equation for cellular respiration."— Presentation transcript:
B-3.2: Summarize the basic aerobic and anaerobic processes of cellular respiration and interpret the chemical equation for cellular respiration
Convert chemical energy in nutrients to chemical energy stored in ATP ATP can then be used for energy for: Cellular metabolic processes Active transport across cell membrane Protein synthesis Muscle contraction (exercise) Any organic compound (food) can be processed and broken down as a source of energy to produce ATP Nutrients + oxygen water + energy (ATP) + carbon dioxide What is Cellular Respiration?
Glycolysis A glucose molecule is broken down into: Pyruvic acid molecules ATP molecules Glycolysis is a series of reactions using enzymes Occurs in the cytoplasm 1 st stage of Cellular Respiration
When oxygen is available, the 2 nd step is the two step process of aerobic respiration, occurs in mitochondria 1 st step: Citric acid or Krebs cycle 2 nd step: Electron transport chain 2 nd step of Cellular Respiration
First step of aerobic respiration is citric acid or Krebs cycle Uses the pyruvic acid formed in glycolysis A series of steps, releasing carbon dioxide, water, and energy Pyruvic acid CO 2 + H 2 O + energy (2 ATP) Aerobic Respiration – part 1
2 nd step of aerobic respiration = electron transport chain Most of the ATP is formed during this part Series of chemical reactions ending with hydrogen combining with oxygen to form water. Carbon dioxide is released as a waste product as it is formed in several stages of the Krebs cycle Each reaction produces a small amount of energy By the end of the cycle, it produces up to 36 ATP molecules Any ATP made is used by the cell for cellular metabolism Aerobic Respiration – part 2
C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 0 + energy In words, 1 glucose molecule and 6 oxygen molecules produce 6 carbon dioxide molecules and 6 water molecules Each reactant is used during different stages of aerobic respiration Each product is formed during different stages of the process Produce about 34 to 36 ATP molecules per 1 glucose molecule Aerobic respiration
What happens if there is no oxygen available? Anaerobic respiration occurs aka fermentation No oxygen?